158612778399 has 8 divisors (see below), whose sum is σ = 211559489152. Its totient is φ = 105703959960.

The previous prime is 158612778383. The next prime is 158612778407. The reversal of 158612778399 is 993877216851.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 158612778399 - 2⁴ = 158612778383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158612778349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9463309 + ... + 9480054.

It is an arithmetic number, because the mean of its divisors is an integer number (26444936144).

Almost surely, 2^158612778399 is an apocalyptic number.

158612778399 is a deficient number, since it is larger than the sum of its proper divisors (52946710753).

158612778399 is a wasteful number, since it uses less digits than its factorization.

158612778399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18946157.

The product of its digits is 45722880, while the sum is 66.

The spelling of 158612778399 in words is "one hundred fifty-eight billion, six hundred twelve million, seven hundred seventy-eight thousand, three hundred ninety-nine".